The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 3 |
| 5 | -1 |
| 6 | 1 |
| 7 | 17 |
| 8 | -2 |
| 9 | -1 |
| 10 | 1 |
| 11 | 80 |
| 12 | 49 |
| 13 | -27 |
| 14 | 2 |
| 15 | 1 |
| 16 | 404 |
| 17 | 733 |
| 18 | -153 |
| 19 | -49 |
| 20 | 9 |
| 21 | 1 |
| 22 | 2359 |
| 23 | 7860 |
| 24 | 1622 |
| 25 | -1606 |
| 26 | 150 |
| 27 | 9 |
| 28 | 1 |
| 29 | 16057 |
| 30 | 80715 |
| 31 | 58965 |
| 32 | -17840 |
| 33 | -3876 |
| 34 | 1163 |
| 35 | -50 |
| 36 | 1 |
| 37 | 125656 |
| 38 | 858706 |
| 39 | 1150722 |
| 40 | 47365 |
| 41 | -175756 |
| 42 | 18239 |
| 43 | 2359 |
| 44 | -267 |
| 45 | 1 |
| 46 | 1112064 |
| 47 | 9710898 |
| 48 | 19571174 |
| 49 | 7548463 |
| 50 | -3175846 |
| 51 | -491809 |
| 52 | 194777 |
| 53 | -9884 |
| 54 | -413 |
[1,1,0,1,3,-1,1,17,-2,-1,1,80,49,-27,2,1,404,733, -153,-49,9,1,2359,7860,1622,-1606,150,9,1,16057, 80715,58965,-17840,-3876,1163,-50,1,125656,858706, 1150722,47365,-175756,18239,2359,-267,1,1112064, 9710898,19571174,7548463,-3175846,-491809,194777, -9884,-413] |